Music-stand.



PATENTBD NOV. 5, 1907.

4 slums-SHEET 2.

INVENTOR. M. R. Hackerson M. R. HACKERSON. l

MUSIC STAND.

APPLIOATION FILED oom. 1906.

A TTORNE Y.

PATENTED NOV. 5, 1907.

M. R. HACKERSON.

MUSIC STAND. ArrLIoATIoN FILED 0012s. 190s.

WITNESSES.- ff

mf. .um .mA a H R M@ ma .Mannes P2525 c:.. Nass. '1 arma, .zu r

No. 870,529. PATBNTED NOV. 5, 1907. M. R. HAGKERSON.

MUSIC STAND.

Arrmoulon rILnD oom. 190e.

' 4 slums-snm 4.

l' Imm. I

WI TN ESSES A INVENTOR. M. l?. Hacken-SOM l Y ATTORNEY nq: Nonna persas ce., wAsmNamN, u. c.

UNITED STATES MARTIN R. HAGKERSO MUSIC- Application tiled October To all whom 'it 'may concern:

Be it known that 1, MARTIN R. llaexnnsox, a citi zen ol the United States of America, residing at Denver, in'the county of Denver and State oi Colorado, have invented certain. new and useful improvements in Music-Stands, of which the tollowing is tion.

My invention relates to improvements in music stands such as used in orchestras and in general by players ol orchestral or band instruments.

Thel object oi the invention is to provide the upper portion or desk o t the stand, which in practice supports the music book or sheet, with an appliance capable oi mechanically measuring the time or rate oi nievement of a musical composition by progressively indicating at a rate oi speed in conformity with the rhythm or movement o the piece, the various notes arranged on the sheet of musicdeposited on the stand. The indicating mcans on one stand may be operated independently or the varit'ius music stands employed in an orchestra may be connected so that their respective indicators will move in unison, being actuated by a mechanism in one ot the stands, preierably the one employed by the leader or director.

f l. attain these objects by in the accompanying drawings, in the various views ol which like parts are similarly designated and in which,

Figure lig-represents a 'lragmentary plan view ot the normally sloping top portion or desk of the stand, Fig. Qwa longitudinal section taken along a line 2v-2, Fig. l, Figs. il and 4#enlarged side elevations of the contrivance on the indicator carrier employed to engage the endless screw, showing two positions, Fig. .5!an enlarged cross section along a line 5Af5, Fig. 1, Fig. (l-an enlarged fragmentary view ol a portion oi the casing showing the extremity ol' the speed regulating lever, Fig. 7fa plan view ol the normally sloping top or desk of the stand having a sheet ol'music in operative position, Fig. Sna fragmentary cross section ol the stand in the normal or operative position, Fig. 9-Ja fragmentary section similar to the one illustrated in Fig. 2 showing a moditication ot the mechanism which adapts it; to actu-ate a plurality ol subordinate stands, Fig. lll-a plan view of one oi the subordinate stands and Fig. 11a birdseye view of a plurality ol stands, interconnected to operate in unison.

In the drawings 6 indicates the in practice sloping top or desk portion of the stand and 7 the standard connecting it with the base or loot, which tor obvious reasons is omitted from the drawings. Desk 6 is coinposed ot' a rectangular oblong box S which contains the mechanism designed to actuate the indicator, and the either integral or detachable, downwardly ranging flat portion 9 which extends ironi the lower side of the box in a plane with its uppermost edges. A rest 10 a. specilica- Specification of Letters Patent.

3.1906- Serial N0. 337,239.

the mechanism illustrated PATENT OFFICE.

OF DENVER, COLORADO.

STAND Patented Nov. 5, 1907.

along the lower edge oi the extension 9 provides a support for the book or sheet ol" music placed on the stand as illustrated in Fig. 7.

11 indicates the indicator-carrier composed of the parallel bars 12, which in practice extend transversely ot the desk and the cross pieces 13 and 13, the upper and lower ones (13) of which are respectively disposed above the upper sideoi box S and below the outer edge ol the extension 9. The extremities of the cross bars 13 are bent upwardly to provide uprights 14, upon the upper ends oi which the indica-tor Wires 15 are stretched in parallel relation to the longitudinal bars 12 ot the carrier. i disposed below the upper surface of the desk through l longitudinal slots 16 in the sides of box 8 while the indicator wires l5 extend above the said surface and l The body portion oi the carrier is the thereupon deposited book or sheet of music. Carrier 11 has a lateral reciprocating movement through slots 1G, along two parallel guide rods 17 which are secured within the box, the said movement being imparted thereto by the spring-actuated mechanism 18 situated on the right end ol the box and which Will now be described. i

19 indicates a coiled spring, one end oi which is secured to an upright spindle 20, rotatably mounted between the bottom portion oi the box and a therewith parallel plate 21, while its opposite extremity is *iastened to a suitable lixed portion ol the device. The rotary movement imparted by spring 19 when unwinding, to the spindle 20 is transmitted through instrninentality ol' a train ol gears 22, to a horizontally disposed beveled gear wheel 23, into which meshes a corresponding pinion '2st at the outer extremity o an endless or leed screw 25. The latter being rotatably supported in one ot the ends oi the box and the therewith parallel partitions 2G and 2G, extends subjacent the carrier and the guide rods 17 in parallel relation thereto and has a plain portion L upon which is mounted a governor 27 ol' conventional construct-ion. The sliding sleeve 2S ol' the governor which is connected with the balls 29 by the links 30 engages the upwardly extending bilurcated extremity S1 o a lever 3l which being disposed transversely along the bottom ol the box, is lulcrumed thereon by means of a pin 32. r1`he extremity oi the outer arm of lever 31 is pivotally connected with a rod 33 which being prot vided with a series oi ratchet teeth, may be held in any desired position by engagement with a catch or dog 311-, arranged to project into the interdental spaces. Rod extending parallelly to the side oi box 8, projects through an aperture 35 in one oi its ends, and is provided at its outer extremity with a handle 35 to iacilitate manipulation.

Carrier 11 is provided with a bell crank lever 36 pivoted to the outermost longitudinal bar 12 by means o t a pin 37. The downwardly extending arm 36, of lever 36, terminates within a short distance from the bottom of the box, while its other arm 36c is provided With a downwardly ranging extension 38, the lower extremity of which is arcuated and constitutes a detent held normally in engagement with the thread of the endless screw 25, by a spring 39 which being secured upon the bar l2, bears upon the arm 36c of the lever. c

Av triangular stop 40 is secured upon the bottom poi'- tion of the box in the path of arm 3G@ of the bell crank, so that when the carrier moving towards the left of the apparatus has completed its stroke, the extremity of the said arm will, by contact with the slanting edge of the stop, be impelled inwardly and in consequence disengage the curved extremity of the extension 38 from the thread of the endless screw. When by contactv with the stop 40, the lever 36 is forced out of engagement with the screw, it is prevented from resuming its original position during the return stroke of the carrier after the arm 36" has moved out of engagement with the stop, by a pawl 4l, pivoted to the bar l2 at 42 and maintained in its normal upright position by a spring 44 and a stop 44. The curved portion of the extremity 38 or detent is to this end provided with a nose 43, which when the arm is forced out of contact with the screw engages the hook shaped lower extremhand end of the desk when the slanting edge of a stop 45 fixed on the box engages an extension 46 of the pawl, which projects beyond its fulcrum above the bar l2 and by forcing the lower extremity of the pawl rearwardly, releases the detent 36 which, by action of the tremity of which is wound around the roller while their I other extremities are secured to one of the longitudinal bars l2.v The rotary movement of the roller 47, which in construction is similar to the rollers commonly used on window shades, will cause the spring secured there-- be returned to its original position by reverse rotation of the roller. Sleeves 49 composed of elastic material placed around the guide rods, will bycontact with the adjacent bar l5, deaden concussion when the carrier impelled by relaxation of the spring in the roller, is returned to its normal position.

n As, during the operation of the device, it is sired point. This object I attain by means of a crank 50, extending between and rotatably supported in the end of the box, and the partitions 26 and provided the desk.

To release the carrier the crank is brought in engagement with the arm 36 of the bell crank, which in consequence turns about its fulcrum and engages the pawl 4l as heretofore described, (see Fig. 4).

When the device is employed to actuate in addition to its own carrier, the carriers of a plurality of subordinate music stands, it is desirable that the extremities oi the endless screw shaft be extended beyond the ends of the box, as shown in Fig. 9, for the purpose of operatively connecting the actuating mechanism With the adjacent stands, represents a diagrammatical birds-eye View of a plurality of interconnected music stands.

Fig. l0 illustrates a plan view of one of the subordinate stands which in principle, operation and construction are identical with the principal stand, the actuating mechanism comprising the spring and gearing being omitted. 53 designates the box having the extension 54, 55 is the carrier with the indicator wires 56, 57 the spring rol-ler connected with the carrier by cords 58, 59 the connecting lever, G0 and-6l respectively the stops employed to release the lever 59 and the pawl or catch (i2, and 63 the endless screw shaft, the extremities of which extend beyond the ends of the box. The movement of the screw on the principal stand (designated by A in Fig. 1l) may be transmitted from either end to the corresponding screws in the subordinate stands (marked B) by any of the many means adapted to this purpose. ln the construction shown in the drawings, the object is accomplished by means of intermediate shafts or rods 52, interposed between the principal stand and the adjacent subordinate ones and between each successive pair of intermediate stands. The ends of rods 52 are fiexibly connected with the protruding extremities of the endless screw shafts in the various stands, by means ofuniversal joints 52, so that when by movement of the spring, the screw in the principal stand is rotated, the shafts on the other stands will synchronously rotate at a uniform rate of speed and the various indicator carriers will consequently move in unison from the right to the left.

ln the operation of the device the mechanical construction of which is set forth in the preceding description, the score or notation of the musical compositions is especially arranged for the purpose as shown in Fig. 7 of the drawings in which the music is designated by the reference numeral G4. The bars 65 which separate the various notes comprised in the composition are equidistantly spaced along each staff 6G, in alinement with those on the other staffs and the spaces thus obtained divided into two equal parts for half notes, four equal parts for quarter notes and so on. The musician, preparatory to playing aicomposition, arranges the sheet or book of music on the desk so that the alined first bars at the left hand end of the staffs on the two pages are respectively in alinement with the two indicator wires, which as illustrated in Fig. 8f extend above the surface of the book or sheet. The governor on the principal stand is now adjusted by manipulation of rod 33 to regulate the rate of speed of the carrier in accordance with the tempo of the musical composition, after which by winding the spring, the endless screw in the principal stand is actuated. 'lhis movement is as heretofore explained, communicated to the various stands in the orchestra, with the result that the respective indicators travel synchronously in lateral directions along the surface of the music deas illustrated in Fig. ll, which",

llO

.wires in alinement with the successive bars on each staff indicate to the musicians the exact period at which each note should be ended and the next one commenced, which not only assures their playing the piece in correct and even tempo but furthermore enables the Various players inthe orchestra to playin perl'ect unison and consequent harmony. When the wires have reached the last bars at the end ot the stati's, the carriers automatically return them to the place oi beginning by action oi the above described releasing mechanism while in case the musician desire to repeal a portionol' the music beiore the cnol ol the sta ll reached, he may return the carrier to its original position by manipulation oi the crank 5t).

The invention is particularly adapted lor use in schools oi music and amateur bands. as it enables the players to accurately lollow the music and obviates the necessity oi watchingr the movements ol' thc leader to learn the tempo in which the piece to be played.

Having,r thus described my invention what l claim isz*- l. A music stand comprising in combination, a desk adapted to support a music sheet, a carrier intermediate its ends having' a reciprocating' movement. and lineal', in dicatory member.` extending' transversely oif the desk above its supporting' surface and connected at their extremities with the carrier.

.A music stand comprisingl in combination a desk, adapted to support a music sheet, an actuating mechanism` a reciprocating carrier normally at one end ot the desk carrying' indica tory members transve ly ol" the desk and above its supporting' surface, and having' means to operatively connect with the said actuating' means, means to automatically return the carrier to its normal position and an instrumentality adapted to break the connection between the said carrier and the actua ting means.

Il. A music stand comprising in combination a desk, adapted to support a music sheet, an actuating' mechanism. a recim'ocatine' carrier normally at one end olf the desk carrying indicatory members transve ely oi.' the desk and above its supporting surface, and having' means to operatively connect with the said actuating.4 mechanism. means to automatically return the carrier to its normal position, and means to automatically break the connection between the actuating' mechanism and the carrier when the latter has traveled a predetermined distance,

4. A music stand comprising' in combination a desk. adapted to support a music sheet, an actuating' mechanism. a reciprocatingcarrier normally at une end ol` the desk carrying indicator-y members transvl 'sely oi' the desk and above its supporting' surface, and having means to opA eratively connect with thc said actuating' mechanism, means to automatically return the carrier to its normal position. means to automatically break the connection between the actuating' means and the carrier when the iai ter has traveled a predetermined distance, and automatic means to reestablish the said connection when the carrier reaches its normal position.

A music stand comprising' in combination a desk. adapted to support a music sheet, a carrier normally at one end o1' the desk carrying' indicatory members trans` vcrsely thereot' and above its supporting, surface, an cndless screw rotatably mounted on the desk, a motor to actuate the screw, a dctent on the carrier arranged to operatively p `cage the screw, and means to automatically return the carrier to its normal position.

t'. A music stand comprising in combination n desk, adapted to support a music sheet', a carrier normally at one end oi the desk carrying indicatory members transversely thercot' and above its supporting surface, an endless screw rotatably mounted on the desk, a motor to actuate the screw, a. dctcnt on the carrier arranged to operatively ene'aa'e thc screw, means to automaticallyv return the carrier to its normal position, and a governor arranged to regulate thc' rotational velocity of the screw.

T. A music stand comprising in combination with thc music suppor desk` an endless screw rotatably mounted thereon, a motor to actuate the screw, a carrier having an indicatory member extending. over the upper surface ol the desk, a detent on the said carrier arranged to normally eng; ,ce the screw and automatic moans to release the said detent at the end oi` the carrier's stroke.

S. A music. stand comprising' in combination with the desk. an endless screw rotatably mounted thereon, a motor lo artuato the screw, a laterally movable carrier having' an indicatory member extending' over the upper surface ol' thtI desk. a detenl on the said carrier normally engaging' the screw, a tension device tendine; to retain the carrier in its normal position, and means to release the detient when the carrier has traveled a predetermined distance.

.l. music stand comprising' in combination with the desk. an endless screw rotatably mounted thereon, a motor to actuate the screw, a laterally movable carrier havinc' an indicatory member extending over the upper surface ol' the desk, a detenl: on the said carrier normally engaging the screw. a tension device tending to retain the carrier in its normal position, means to release the dctent at the termination oi" the carriers travel, locking means to retain thc delent in the released position, and means to cause its reenh gement. when the carrier reaches its normal position.

iol music stand comprising in combination with the desk, an endless screw rotatably mounted thereon, a motor to actnate the screw, a laterally movable carrier havina' an indicatory member extending over thc upper surface oi' the desk, a dctent on the said carrier normally engaging' the screw. a tension device tending to retain the carrier in the lattcr's normal position, and means to release the detent al an arbitrary point ot' the carrier's travel.

il. A music stand comprising in combination with the music supportin desk, a carrier havingl indicatory niembers extendingv above its upper surface, a mechanism adapted to impart a reciprocating,- movement to the said carrier and to be operatively connected with mechanisms ot adjacent. similar stands. suitable means to make the said connection, and a suitably located motor arranged to actuate the connected mechanisms.

12. A music-stand comprising in combination with the music-supporting desk. an endless screw rotatably mounted thereon, a carrier having indicatory members extending' ever the upper surt'acc ot the desk, operatively connected with the said screw, means to ope ativcly connect: the lat- 'entities with screws ot' adjacent similar stands, and a suitably located motor arranged to rotate the" connected screws,

ln testimony whereof I prcsence'ot' two witnesses.

have aiiixed my signature in MARTIN li. HACKERSON. Witnesses (i, I. RoLLxNnn'r, ii. ll. Omisny. 

